Abstract: A surge suppressor conducts heat from a surge protection component (SSC) through a heat conductive element, such as a copper pad, on a printed circuit board, to at least one thermal fuse to cause the thermal fuse to open when the resistance of the SSC begins to decrease, resulting in an increase of heat generated by the SSC.

Abstract: A surge suppressor conducts heat from a surge protection component (SSC) through a heat conductive element, such as a copper pad, on a printed circuit board, to at least one thermal fuse to cause the thermal fuse to open when the resistance of the SSC begins to decrease, resulting in an increase of heat generated by the SSC.

Abstract: A surge suppressor conducts heat from a surge protection component (SSC) through a heat conductive element, such as a copper pad, on a printed circuit board, to at least one thermal fuse to cause the thermal fuse to open when the resistance of the SSC begins to decrease, resulting in an increase of heat generated by the SSC.

Abstract: A surge suppressor for a radio frequency (RF) transmission line includes an a printed circuit board having a conductor for connection in series with a RF transmission line. The conductor has a capacitance for passing RF signals and blocking transients. To the printed circuit board are mounted a choke and a resistor, each of which is connected in series with the transmission line and in parallel to each other and to the capacitance of the conductor. The choke passes steady, direct current signals for powering equipment located on an antenna. The surge suppressor further includes the first and second discharge stages connected to the conductor on opposite sides of the impedance. Each stage includes a discharge device connected to the conductor through a radio frequency choke. The choke blocks leakage of radio frequencies into the discharge devices. A gas discharge tube is used for the first stage, which is for connection to an antenna side of the surge suppressor.

Abstract: A surge suppressor for a radio frequency (RF) transmission line includes a printed circuit board having a conductor for connection in series with a RF transmission line. The conductor has a capacitance for passing RF signals and blocking transients. To the printed circuit board are mounted a choke and a resistor, each of which is connected in series with the transmission line and in parallel to each other and to the capacitance of the conductor. The choke passes steady, direct current signals for powering equipment located on an antenna. The surge suppressor further includes the first and second discharge stages connected to the conductor on opposite sides of the impedance. Each stage includes a discharge device connected to the conductor through a radio frequency choke. The choke blocks leakage of radio frequencies into the discharge devices. A gas discharge tube is used for the first stage, which is for connection to an antenna side of the surge suppressor.

Abstract: A fiber optic splice closure permits grounding a fiber optic backbone cable but allows for propagation of cable-locating signals along the full length of the backbone cable and along fiber optic spur cables spliced to the backbone cable in the closure. An electrically conductive sheath of the backbone cable is coupled to ground through a surge protector and through a resistor to a conductive member of each spur cable. The terminating end of the spur cable is hard grounded at the customer site. The surge protector and resistor are mounted outside a sealed splice chamber of the closure.